.center {
    background: #F4F4F4;
}



.banner-bg .text {
    width: 1200px;
    background: transparent;
    font-family: 微软雅黑, "Microsoft YaHei";
    color: #333333;
    font-size: 22px;
    margin: auto;
    height: 120px;
}

.banner-bg .title {
    text-align: left;
}


.banner-bg .case-list {
    position: absolute;
    bottom: 0;
    width: 100%;
    height: 72px;
    background: rgba(0, 0, 0, 0.5);
}

.banner-bg .case-list ul {
    zoom: 1;
}

.banner-bg .case-list ul:after {
    content: " ";
    display: block;
    height: 0;
    clear: both;
    visibility: hidden;
}

.banner-bg .case-list li {
    float: left;
    height: 72px;
    width: 12.5%;
    padding-top: 15px;
    box-sizing: border-box;
    background: #11487B;
}

.banner-bg .case-list li:hover {
    background: #CFDAE5;
}

.banner-bg .case-list li:hover a {
    color: #11487B;
}

.banner-bg .case-list li a {
    font-size: 18px;
    height: 40px;
    line-height: 40px;
    display: block;
    color: #FFFFFF;
}

.banner-bg .case-list .ind-case {
    background: #CFDAE5;
}

.banner-bg .case-list .ind-case a {
    color: #11487B;
}


/** 页面通用样式，去除banner **/
.center .content {
    width: 1200px;
    height: 950px;
    font-family: 微软雅黑, "Microsoft YaHei";
    color: #333333;
    margin: auto;
}

.content .content-title {
    font-size: 28px;
    margin-top: 90px;
}

.content-desc {
    float: right;
    font-size: 14px;
    margin-top: 58px;
    text-align: justify;
}

.content-desc .desc-img{
    margin: 0 100px 60px 0;
    width: 600px;
}

.title {
    font-weight: 600;
    font-size: 22px;
    color: #414141;
}

.line {
    width: 1200px;
    height: 0px;
    opacity: 1;
    border: 1px solid #EAEEF1;
    margin-top: 32px;
}

.desc-img {
    display: inline-block;
    vertical-align: top;
}

.img-item {
    width: 600px;
    height: 338px;
}

.img-item:last-child {
    margin-top: 60px;
}

.desc-content {
    display: inline-block;
    width: 495px;
    height: 50px;
    vertical-align: top;
}

.item div {
    display: inline-block;
}

.challenge-content {
    width: 475px;
    vertical-align: top;
    margin-left: 5px;
}

.content-desc {
    text-align: justify;
}

.challenge-item {
    margin-top: 8px;
}